CN111622738A - Tubular oil well gas-liquid automatic metering device and measuring method thereof - Google Patents
Tubular oil well gas-liquid automatic metering device and measuring method thereof Download PDFInfo
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- CN111622738A CN111622738A CN202010558393.3A CN202010558393A CN111622738A CN 111622738 A CN111622738 A CN 111622738A CN 202010558393 A CN202010558393 A CN 202010558393A CN 111622738 A CN111622738 A CN 111622738A
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- 239000007788 liquid Substances 0.000 title claims abstract description 190
- 239000003129 oil well Substances 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000004891 communication Methods 0.000 claims abstract description 10
- 238000005303 weighing Methods 0.000 claims description 14
- 238000000926 separation method Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 7
- 238000009825 accumulation Methods 0.000 claims description 4
- 210000003437 trachea Anatomy 0.000 claims description 3
- 239000003921 oil Substances 0.000 abstract description 13
- 239000010779 crude oil Substances 0.000 abstract description 6
- 238000001556 precipitation Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000005259 measurement Methods 0.000 description 7
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005191 phase separation Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/34—Arrangements for separating materials produced by the well
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Abstract
The invention discloses a tubular oil well gas-liquid automatic metering device and a measuring method thereof, belonging to the field of oil exploitation metering equipment. Including RTU controller, metering unit A, metering unit B, be equipped with the feed liquor branch pipe that communicates with the feed liquor house steward on metering unit A and the metering unit B respectively, be equipped with the inlet valve on the feed liquor branch pipe, metering unit A and metering unit B upper end are through giving vent to anger the branch pipe intercommunication, give vent to anger the branch pipe and give vent to anger the pipe intercommunication, metering unit A and metering unit B lower extreme all with go out the liquid pipe intercommunication, give vent to anger the pipe and go out the liquid pipe and pass through the outlet valve and go out liquid house steward intercommunication, metering unit A, metering unit B and inlet valve, outlet valve all with RTU controller communication connection. The invention overcomes the problem that the traditional flowmeter-based metering of crude oil gas and liquid has large influence on the metering precision error of the oil well due to intermittent liquid supply, wax precipitation and scaling and the gas-containing oil well, and is very worthy of popularization and application in actual work.
Description
Technical Field
The invention relates to the field of petroleum exploitation metering equipment, in particular to a tubular oil well gas-liquid automatic metering device and a measuring method thereof.
Background
The measurement of the oil well yield is an important work in the production management of the oil field, the oil well yield is accurately and timely measured, and the method has important guiding significance for mastering the oil reservoir condition and formulating a production scheme. The oil well yield measuring methods adopted in various oil fields in China at present mainly comprise a glass pipe measuring oil pore plate gas measuring method, a tipping bucket measuring oil pore plate gas measuring method, a two-phase separation density method, a three-phase separation measuring method and the like. The oil field development enters the middle and later stages, because the oil is thick, contains polymer, contains gas and wax, and the situation that the single well liquid amount is low, the oil is thick and the thermal condition is poor in a new area is common, and various problems exist in the measurement process of various common oil measuring modes. Traditional crude oil gas-liquid metering device all adopts separator plus mass flow meter and gas flowmeter mode, requires highly to the operating mode, especially is fairly big to the measuring error of gassy oil well, and the instrument is easy to be bad moreover, and easy scale deposit, wax precipitation, the later maintenance volume is big.
Disclosure of Invention
The invention aims to: the utility model provides a tubular oil well gas liquid automatic metering device is a novel digital oil well gas liquid measurement product that further upgrade improved development was developed on the basis of two-chamber separation measurement technique, the mode that utilized flowmeter measurement liquid measure, tolerance in the past is abandoned, the difficult problem that current oil field with the merit picture method can't measure gas well, electric submersible pump well and screw pump well liquid measure and gas production measurement has been solved, the problem that the measurement precision error is big is influenced to oil well intermittent type incoming liquid, wax precipitation and gassiness oil well to the tradition because of flowmeter measurement crude oil gas liquid has been overcome.
The technical scheme adopted by the invention is as follows:
the utility model provides a tubular oil well gas-liquid automatic metering device which characterized in that: including RTU controller, metering unit A2, metering unit B3, be equipped with the liquid inlet branch pipe with the main 1 intercommunication of liquid inlet on metering unit A2 and the metering unit B3 respectively, be equipped with inlet valve 4 on the liquid inlet branch pipe, metering unit A2 and metering unit B3 upper end are through giving vent to anger branch pipe 9 intercommunication, give vent to anger branch pipe 9 and outlet pipe 5 intercommunication, metering unit A2 and metering unit B3 lower extreme all with play liquid pipe 6 intercommunication, outlet pipe 5 and play liquid pipe 6 pass through outlet valve 7 and play liquid house steward 8 intercommunication, metering unit A2, metering unit B3 and inlet valve 4, outlet valve 7 all with RTU controller communication connection.
Metering unit A2 and metering unit B3 constitute by two parallelly connected metering tubes, and trachea intercommunication is passed through at two parallelly connected metering tube tops, metering tube bottom sets up high accuracy weighing sensor 10, and the inside high accuracy vapour and liquid separator that is provided with of metering tube, high accuracy weighing sensor 10 and high accuracy vapour and liquid separator all with RTU controller communication connection. And a liquid level sensor is arranged on the metering pipe.
Liquid outlet branch pipes 11 are respectively arranged at the bottoms of the metering unit A2 and the metering unit B3, outlet valves a12 are arranged on the liquid outlet branch pipes 11, and the liquid outlet branch pipes 11 are communicated with the liquid outlet guide pipe 6.
The outlet valve a12 is a self-control valve, and the outlet valve a12 is connected with the RTU controller in a communication mode.
The nominal diameter of the metering tube is less than 150 mm.
The outlet valve 7 is an electric three-way valve.
The inlet valve 4 is a self-control valve.
The measuring method of the tubular oil well gas-liquid automatic metering device is characterized by comprising the following steps of: liquid metering: the liquid coming from an oil well enters a metering device through a liquid inlet main pipe 1, an RTU controller controls an inlet valve 4 on a liquid inlet branch pipe on a metering unit A2 to be opened, an inlet valve 4 on a liquid inlet branch pipe on a metering unit B3, an outlet valve a12 on a liquid outlet branch pipe 11 at the bottom of a metering unit A2 and an outlet valve a12 on a liquid outlet branch pipe 11 at the bottom of a metering unit B3 to be closed, the liquid coming from the oil well enters a metering unit A2, the liquid and the liquid are separated by a high-precision separator arranged in a metering pipe of a2, the gas is discharged through a gas outlet guide pipe 5, the liquid enters a metering unit A2 to be stored, when the liquid amount reaches a set value, a high-precision weighing sensor 10 is arranged at the bottom of the metering pipe to carry out primary metering, the data is sent to the RTU controller, then the RTU controller controls the inlet valve 4 on the liquid inlet branch pipe of the metering unit A2 to be closed, the outlet valve a12 on the liquid outlet branch, an inlet valve 4 on a liquid inlet branch pipe on a metering unit B3 is opened, a gas outlet of an outlet valve 7 is closed, liquid coming from an oil well enters a metering unit B3, the liquid is separated from gas by a high-precision separator arranged in a metering pipe of a metering unit B3, the gas is discharged through a gas outlet guide pipe 5, the liquid enters the metering unit B3 for liquid accumulation, when the liquid amount reaches a set value, a high-precision weighing sensor 10 is arranged at the bottom of the metering pipe for secondary metering, the data is transmitted to an RTU controller, the inlet valve 4 on the liquid inlet branch pipe of the metering unit B3 is closed, an outlet valve a12 on a liquid outlet branch pipe 11 at the bottom of the metering unit B3 is opened at the same time, the liquid enters a liquid outlet guide pipe 6, the inlet valve 4 on the liquid inlet branch pipe on the metering unit A2 is opened and is circulated and reciprocated for;
gas metering: the liquid coming from the oil well passes through the liquid inlet header pipe 1 and then enters the high-precision gas-liquid separator arranged in the metering pipe, so that the complete separation of free gas and the preliminary separation of partial emulsified gas are realized, and the separated gas is converged and flows out through the gas outlet guide pipe and the gas path of the outlet valve 7. When the upper liquid level meter of the metering unit measures the set height, the valve is closed, the current liquid level height value is recorded, liquid drainage is started at the moment, the liquid level value is observed, and when the liquid level reaches the set lower liquid level value, the air passage of the outlet valve 7 is opened, and the next metering is started.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that: the device is a novel digital oil well gas liquid metering product which is developed by further upgrading and improving on the basis of a double-cavity separation metering technology, replaces the mode of metering liquid and gas by using a flowmeter in the past, solves the problem that the existing oil field power consumption graph method cannot meter the liquid and gas production metering of a gas-containing well, an electric submersible pump well and a screw pump well, and overcomes the problem that the traditional metering precision error is large due to the influence of metering crude oil gas and liquid on the oil well on intermittent liquid supply, wax precipitation and scaling and the gas-containing oil well based on the flowmeter.
The whole device is based on gas-liquid separation and weight folding algorithm, the metering pipe adopts a pipeline with DN less than 150mm, the pipeline does not belong to the national pressure vessel sequence, a U-shaped pipe self-balancing design structure and a mature liquid level height measuring technology are formed by two parallel metering pipes, the whole system is always in pressure balance, and no matter the liquid amount and the gas amount are metered at any time, the pipeline pressure loss can not be generated.
Under the condition of not using a gas flowmeter, the gas-liquid separator is used for realizing automatic metering of gas quantity in the liquid inlet and discharge process, the automatic metering device has the function of automatically separating liquid from gas in an oil well, the metering control process is fully automatic, no personnel are required to participate in the working process of the device, and the safe production of the oil field can be ensured.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
The labels in the figure are: 1-a liquid inlet header pipe; 2-a metering unit a; 3-a metering unit B; 4-an inlet valve; 5-an air outlet duct; 6-liquid outlet conduit; 7-an outlet valve; 8-liquid outlet header pipe; 9-air outlet branch pipe; 10-high precision weighing sensor; 11-liquid outlet branch pipe; 12-outlet valve a.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments.
Example (b):
the utility model provides a tubular oil well gas-liquid automatic metering device, as figure 1, includes RTU controller, metering unit A2, metering unit B3, be equipped with the liquid inlet branch pipe that communicates with liquid inlet manifold 1 on metering unit A2 and the metering unit B3 respectively, be equipped with inlet valve 4 on the liquid inlet branch pipe, metering unit A2 and metering unit B3 upper end are through giving vent to anger branch pipe 9 intercommunication, give vent to anger branch pipe 9 and air outlet pipe 5 intercommunication, metering unit A2 and metering unit B3 lower extreme all communicate with liquid outlet pipe 6, air outlet pipe 5 and liquid outlet pipe 6 pass through outlet valve 7 and liquid outlet manifold 8 intercommunication, metering unit A2, metering unit B3 and inlet valve 4, outlet valve 7 all with RTU controller communication connection.
Metering unit A2 and metering unit B3 constitute by two parallelly connected metering tubes, and trachea intercommunication is passed through at two parallelly connected metering tube tops, metering tube bottom sets up high accuracy weighing sensor 10, and the inside high accuracy vapour and liquid separator that is provided with of metering tube, high accuracy weighing sensor 10 and high accuracy vapour and liquid separator all with RTU controller communication connection. And a liquid level sensor is arranged on the metering pipe.
Liquid outlet branch pipes 11 are respectively arranged at the bottoms of the metering unit A2 and the metering unit B3, outlet valves a12 are arranged on the liquid outlet branch pipes 11, and the liquid outlet branch pipes 11 are communicated with the liquid outlet guide pipe 6.
The outlet valve a12 is a self-control valve, and the outlet valve a12 is connected with the RTU controller in a communication mode.
The nominal diameter of the metering tube is less than 150 mm.
The outlet valve 7 is an electric three-way valve.
The inlet valve 4 is a self-control valve.
The measuring method of the tubular oil well gas-liquid automatic metering device comprises the following steps:
liquid metering: as shown in figure 1, oil well incoming liquid (crude oil gas-liquid mixed liquid) enters the device through a liquid inlet main pipe 1, an RTU controller controls an inlet valve 4 on a liquid inlet branch pipe on a metering unit A2 to be opened, an inlet valve 4 on a liquid inlet branch pipe on a metering unit B3, an outlet valve a12 on a liquid outlet branch pipe 11 at the bottom of the metering unit A2 and an outlet valve a12 on a liquid outlet branch pipe 11 at the bottom of the metering unit B3 to be closed, the oil well incoming liquid enters a metering unit A2 to be subjected to gas-liquid separation through a high-precision separator arranged in a metering pipe of the metering unit A2, gas is discharged through an air outlet guide pipe 5 387, the liquid enters the metering unit A5 to be subjected to liquid accumulation, when the liquid amount reaches a set value, a high-precision weighing sensor 10 is arranged at the bottom of the metering pipe to perform primary metering, the data is transmitted to the RTU controller, then the RTU controller controls the inlet valve 4 on the liquid, liquid in a metering unit A2 is discharged to a liquid outlet guide pipe 6 and then discharged to a liquid outlet main pipe, an inlet valve 4 on a liquid inlet branch pipe on a metering unit B3 is opened, an air outlet of an outlet valve 7 (an electric three-way valve) is closed, liquid coming from an oil well enters a metering unit B3, gas and liquid are separated by a high-precision separator arranged in a metering pipe of a metering unit B3, the gas is discharged through an air outlet guide pipe 5, the liquid enters a metering unit B3 for liquid accumulation, when the liquid amount reaches a set value, a high-precision weighing sensor 10 is arranged at the bottom of the metering pipe for secondary metering, data is transmitted to an RTU controller, an inlet valve 4 on a liquid inlet branch pipe of a metering unit B3 is closed, an outlet valve a12 on a liquid outlet branch pipe 11 at the bottom of a metering unit B3 is opened at the same time, the liquid enters the liquid outlet guide pipe 6, the inlet; in the process, the valves are controlled by the RTU controller to be automatically opened and closed;
gas metering: as shown in fig. 1, the incoming liquid (crude oil gas-liquid mixed liquid) from the oil well passes through a liquid inlet header pipe 1 and then goes to a built-in high-precision gas-liquid separation device 12 to realize the complete separation of free gas and the preliminary separation of partial emulsified gas, and the separated gas is converged and flows out through a gas outlet conduit and an outlet valve 7 (electric three-way valve). When the upper liquid level meter of the metering unit measures the set height, the valve is closed, the height value of the current liquid level is recorded, liquid drainage is started at the moment, the liquid level value is observed, and when the liquid level reaches the set lower liquid level value, the gas circuit of the outlet valve 7 is opened to start metering for the next time.
The measuring principle of the invention is designed by taking the double-cavity oil well separator and the weighing method principle as the core, and can measure the gas production rate and the liquid production amount of the oil well. When the produced liquid of the oil well enters one metering unit, the liquid level of the unit rises, the liquid level of the other unit falls under the action of the produced gas, a pressure sensor is arranged at the bottom of the unit, the pressure sensor reaches a set value, the produced liquid of the oil well enters the other unit, and the process is repeated in a circulating mode.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. The utility model provides a tubular oil well gas-liquid automatic metering device which characterized in that: including RTU controller, metering unit A (2), metering unit B (3), be equipped with the feed liquor branch pipe with feed liquor house steward (1) intercommunication on metering unit A (2) and the metering unit B (3) respectively, be equipped with inlet valve (4) on the feed liquor branch pipe, metering unit A (2) and metering unit B (3) upper end are through giving vent to anger branch pipe (9) intercommunication, give vent to anger branch pipe (9) and give vent to anger pipe (5) intercommunication, metering unit A (2) and metering unit B (3) lower extreme all with play liquid pipe (6) intercommunication, give vent to anger pipe (5) and play liquid pipe (6) through outlet valve (7) and play liquid house steward (8) intercommunication, metering unit A (2), metering unit B (3) and inlet valve (4), outlet valve (7) all with RTU controller communication connection.
2. The automatic metering device of tubular oil well gas liquid according to claim 1, characterized in that: metering unit A (2) and metering unit B (3) constitute by two parallelly connected metering tubes, and trachea intercommunication is passed through at two parallelly connected metering tube tops, metering tube bottom sets up high accuracy weighing sensor (10), and the inside high accuracy vapour and liquid separator that is provided with of metering tube, high accuracy weighing sensor (10) and high accuracy vapour and liquid separator all with RTU controller communication connection.
3. The automatic metering device of tubular oil well gas liquid according to claim 1, characterized in that: the bottom of the metering unit A (2) and the bottom of the metering unit B (3) are respectively provided with a liquid outlet branch pipe (11), the liquid outlet branch pipe (11) is provided with an outlet valve a (12), and the liquid outlet branch pipe (11) is communicated with a liquid outlet conduit (6).
4. The automatic metering device of the tubular oil well gas liquid according to claim 3, characterized in that: the outlet valve a (12) is an automatic control valve, and the outlet valve a (12) is in communication connection with the RTU controller.
5. The automatic metering device of tubular oil well gas liquid according to claim 1, characterized in that: the nominal diameter of the metering tube is less than 150 mm.
6. The automatic metering device of tubular oil well gas liquid according to claim 1, characterized in that: the outlet valve (7) is an electric three-way valve.
7. The automatic metering device of tubular oil well gas liquid according to claim 1, characterized in that: the inlet valve (4) is a self-control valve.
8. The method for measuring the automatic metering device of the tubular oil well gas liquid according to any one of the claims 1 to 7, characterized by comprising the following steps:
liquid metering: the liquid coming from the oil well enters the metering device through the liquid inlet main pipe (1), the RTU controller controls the inlet valve (4) on the liquid inlet branch pipe on the metering unit A (2) to be opened, the inlet valve (4) on the liquid inlet branch pipe of the metering unit B (3), the outlet valve a (12) on the liquid outlet branch pipe (11) at the bottom of the metering unit A (2) and the outlet valve a (12) on the liquid outlet branch pipe (11) at the bottom of the metering unit B (3) to be closed, the liquid coming from the oil well enters the metering unit A (2) to be separated from gas through the high-precision separator arranged in the metering pipe of the metering unit A (2), the gas is discharged through the gas outlet guide pipe (5), the liquid enters the metering unit A (2) to be stored, when the liquid volume reaches a set value, the high-precision weighing sensor (10) is arranged at the bottom of the metering pipe to carry out one-time metering, the data is transmitted to the RTU controller, then the RTU controller controls, an outlet valve a (12) on a liquid outlet branch pipe (11) at the bottom of a metering unit A (2) is opened, liquid of the metering unit A (2) is discharged to a liquid outlet guide pipe (6) and then discharged to a liquid outlet main pipe, an inlet valve (4) on a liquid inlet branch pipe on the metering unit B (3) is opened, a gas outlet of an outlet valve (7) is closed, liquid coming from an oil well enters the metering unit B (3), gas and liquid are separated by a high-precision separator arranged in a metering pipe of the metering unit B (3), gas is discharged through a gas outlet guide pipe (5), the liquid enters the metering unit B (3) for liquid accumulation, when the liquid amount reaches a set value, a high-precision weighing sensor (10) is arranged at the bottom of the metering pipe for secondary metering, the data is transmitted to an RTU controller, the inlet valve (4) on the liquid inlet branch pipe of the metering unit B (3) is closed, the outlet valve a (12) on the liquid outlet branch pipe (, liquid enters a liquid outlet conduit (6), an inlet valve (4) on a liquid inlet branch pipe on the metering unit A (2) is opened, the metering is carried out for the next time in a circulating reciprocating manner, and the valve is controlled by an RTU controller to be automatically opened and closed in the metering process;
gas metering: the liquid that comes from the oil well passes through feed liquor house steward (1), arrives the built-in high accuracy vapour and liquid separator of metering tube again, realizes the complete separation and the initial separation of partial emulsified gas to free gas, and the gas circuit of separating is joined and is flowed out through giving vent to anger pipe and outlet valve (7). When the upper liquid level meter of the metering unit measures the set height, the valve is closed, the height value of the current liquid level is recorded, liquid drainage is started at the moment, the liquid level value is observed, and when the liquid level reaches the set lower liquid level value, the gas circuit of the outlet valve (7) is opened to start metering for the next time.
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CN202010558393.3A CN111622738A (en) | 2020-06-18 | 2020-06-18 | Tubular oil well gas-liquid automatic metering device and measuring method thereof |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113494287A (en) * | 2021-07-27 | 2021-10-12 | 兰州科翔自控技术有限公司 | Crude oil branching and gathering type yield measuring instrument |
CN113586955A (en) * | 2021-07-22 | 2021-11-02 | 兰州科翔自控技术有限公司 | Intelligent metering and monitoring integrated system for crude oil gathering and conveying line |
CN115199258A (en) * | 2022-09-15 | 2022-10-18 | 四川凯创机电设备有限公司 | Metering well selection mixed transportation pry and metering control method thereof |
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GB1020929A (en) * | 1963-06-11 | 1966-02-23 | Deputy Minister | Method and apparatus for discharge and metering of liquids from oil and gas separators |
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CN205618149U (en) * | 2016-04-05 | 2016-10-05 | 盘锦乐泰机械有限公司 | Weightometer volume device is pressed to double volume aqccumulated excess |
CN212508263U (en) * | 2020-06-18 | 2021-02-09 | 兰州科翔自控技术有限公司 | Tubular oil well gas-liquid automatic metering device |
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GB1020929A (en) * | 1963-06-11 | 1966-02-23 | Deputy Minister | Method and apparatus for discharge and metering of liquids from oil and gas separators |
CN201443388U (en) * | 2009-06-24 | 2010-04-28 | 侯秀梅 | Device for continuously and automatically metering output of oil well |
CN202073552U (en) * | 2011-04-19 | 2011-12-14 | 克拉玛依市百口泉建筑安装有限责任公司 | Automatic oil-gas metering device |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN113586955A (en) * | 2021-07-22 | 2021-11-02 | 兰州科翔自控技术有限公司 | Intelligent metering and monitoring integrated system for crude oil gathering and conveying line |
CN113494287A (en) * | 2021-07-27 | 2021-10-12 | 兰州科翔自控技术有限公司 | Crude oil branching and gathering type yield measuring instrument |
CN115199258A (en) * | 2022-09-15 | 2022-10-18 | 四川凯创机电设备有限公司 | Metering well selection mixed transportation pry and metering control method thereof |
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